Feanklin w



(No Model.)

F.. W. BROOKS.

' LEAD SBA-L. Y

I Patented Nov.1v5, 1887.

UNITED STATES PATENT OFFICE.

FRANKLIN W. BROOKS, OF NEW YORK, N. Y., ASSIGNOR TO THE NEW YORK LEADSEAL AND PRESS COMPANY, OF SAME PLACE.

LEAD SEAL.

SPECIFICATION forming part of Letters Patent No. 373,332, dated November15, 1887.

Application tiled June 2, 1887. Serial No. 240,023. (No model.)

To all whom it may concern:

Be it known that I, FRANKLIN W. BRooKs, a citizen of the United States,residing at New YYork, county and State of New York, have larly to thatclass in which the wire or shackle is firmly locked against withdrawalfrom the lead disk after the latter has been compressed by the press orother compressing-tool; and my invention has for its objects to providea bar of tin or sheet-iron arranged within the lead disk during themolding process, which shall serve as a certain anchor for the Wireshackle when the latter is crimped or corrugated.

My invention has also for its object an enlargement of the lead disk atapredetermined locality, and of such configuration as to form a stop forthe proper adjustment of the disk within the compressing-dies; and withthese ends in view my invention consists, iirst, in providing the leaddisk interiorly (and during the molding process) with a bar of tin orsheetiron properly perforated or punctured in line with thewire-channels formed in the disk, to serve as an anchor to the wireshackle, which is preferably corrugated o1' crimped longitudinally;second, in forming the lead disk with an enlargement or preponderance ofmetal at a predetermined locality and of such coniiguration as willserve as a stop for the proper adjustment of the diskwithin thecompressing-dies, all as will be hereinafter more fully describedandspecifically claimed.

In order that those skilled in the art to which my invention appert-ainsmay fully understand the same, I will proceed to describe itsconstructionand operation, referring by letters to the accompanyingdrawings, in whichv Figure l is a central section of a lead seal withwire shackle embodying my improvements, and illustrating its conditionbefore the metal disk is compressed. Fig. 2 is a transverse sectiontaken 'on line fw w of Fig. 1. Fig. 3 is a similar section to that shownat Fig. 1, but showing a modification as to form and arrangement of theinternally-arranged tin or sheet-iron bar or strip. Fig. 4 is a sectiontaken at line a: x. of Fig. 3. Fig. is a plan view of a seal with apreponderance of metal arranged diametrically across the same on oneside and tapered from the center toward the circumference, for thepurpose presently to be explained. Fig. 6 is a section at the line y yof Fig. 5. Fig. 7 is a plan view of a modiiied form and arrangement ofthe preponderating portion of the seal, and Fig. 8 is a section at theline z a of Fig. 7. Fig. 9 is a section similar to Fig. l, but showingthe condition and relation of the seal and shackle 6- after the disk hasbeen compressed between dies; and Fig. 10 is a view similar to Fig. 3,showing the condition of the parts illustrated at Fig. 3 aftercompression between dies.

Similar letters indicate like parts in the several figures.

A represents a soft-lead seal, which is made by casting in the usualmanner.

B is a bar or strip of thin sheet iron or tin arranged within the moldduring the casting process, so that it will be confined within the bodyof the seal, as clearly shown. This bar or strip is formed with twoholes in line with the channels da, formed for the passage of the wireshackle O. The Wire shackle O is preferably S0 crimped longitudinally,in order that when the lead seal is compressed the curve of one of thecrimps in each leg of the shackle will be pressed against the metal edgeof the bar B, surrounding the holes a a therein firmly, as I Se havefound from experience that the compresu sion of the lead forming thedisk (and especially when itis formed with a preponderance, as shown atFigs. 5, 6, 7, and 8) will tend to spread the ends of the wire below thebar B, as best illustrated at Figs. 9 and l0.

The shackle O, as shown at Fig. 1, above the disk A is intended toillustrate the fact (which is another desideratum of the crimped wire)that any attempt to withdraw the wire from the disk-seal after thelatter has been compressed will result in straightening out the wire ordestroying the crimps, and thus render manifest any such attempt, itbeing of course obvious that the strain necessary to roo straighten thewire is considerably less than that required to dislodge the wire fromits grip upon the bar B.

At Figs. 3 and l0 is clearly illustrated a modification in the form ofthe strip or bar B shown at Fig. I. In the latter case it is representedas a simple straight bar, while at Figs. 3 and l() it is a strip in theform of a partial or complete circle, and in which event the strip ispunctured at four points to permitthe passage of the ends or legs oflthe shackle G. This strip may also be madein V shape or zigzag form, ifso desired, without departing from the spirit of my invention.

In order that the compression of the metal composing the disk shall withcertainty tend to the spreading laterally of the lower ends of the wireshackle, as illustrated at Figs. 9 and 10, I form the disk with apreponderating bar, D, eXtcriorly, as shown at Figs. 5 and G, or on bothsides, each side of the center, as shown at Figs. 7 and S; but in bothcases the preponderating portion is tapered from the center to thecircumference of the seal, as clearly shown, for the purpose ofelfecting the proper adjustment of the seals within the dies of thecompressing-tool, the said dies moving in the arc of a circle. Theirrear edges are of course nearer together than the forward edges; hencethe taper of the portions D of eitherstyle represented will at theproper time come in contact with the faces of the open dies, and securethereby the proper adjustment to secure perfect compression andimpression, which is a great desideratum, especially when working atnight, as most frequently occurs.

Vhile I have shown the shackle of my improved seal as formed of crimpedwire for the reasons explained, I do not of course wish to limit myselfin this particular, as plain wire may be employed and a very secure lockmade; nor do I wish to be confined to the exact limits as to size andlocation of the preponderating portion of the metal of the seal, as thatmay be varied considerably without departing from the gist of myinvention in this particular, which rests in the idea of so locating andtapering this portion of the seal that at the proper time to secure theproper location of the seal the preponderance of metal will come incontact with those portions of the faces of the dies which are closesttogether.

I am aware of Letters Iatent No. 321,275, in which is illustrated anddescribed a means for protecting the wire shackle against outsidemanipulation by the employment of hardmetal protectors, around which thesoft-metal seal is cast in such manner that the shackle is protectedlaterally at all points, and one of the modifications illustratedconsists of a narrow metallic box open on three of its sides or edgesand having cach. of its sides which are parallel with the disk-faces ofthc lead seal formed with openings to facilitate the Iiow of the liquidlead during the casting process. This construction differs frommyinvention in the fact that the ilat sides of the concealed metallicbox lie outside of or over the wire shackle, while in a structureinvolving my invention there is nothing superimposed upon the shacklebut the lead composing the seal below or between the points at which theshackle passes through theeastin metallic bar, and hence when pressureis exerted upon the seal to compress the same upon the wire shackle andto impress any suitable design upon the surface of the lead the latteris forced out toward the circumference ofthe disk, and that portion ofthe lead confined between the legs of the shackle, following the generaldirection of displacement referred to, spreads or carries with it thelegs of the shackle, and thus securely locks the same with the cast-inbar, as clearly illustrated. This result cannot successfully ensue in asimilar compression of the seal forming the subject-matter of theLetters Patent referred to, and hence it will be understood that Idisclaim any such construction; but

What I do claim as new, and desire to se cure by Letters Patent, is-

l. In a lead seal provided with shackle channels a through the disk, aiat bar or strip,

B, concealed or located within the disk and having its fiat surfacearranged transverse to the faces of the lead disk, and provided withshackle-holes coincident with the channels a, the said concealed barbeing free from any depending wings parallcl with the faces of the leaddisk, substantially as hereinbcfore set forth.

2. The disk A, formed with a preponderating portion, D, saidpreponderance being tapered toward the edge of the disk to form anadjustingstop, substantially as and for the purpose hereinbefore setforth.

In testimony whereofI have hereunto sct my hand in the presence of twosubscribing witnesses.

FRANKLIN V. BROOKS.

Vitnesses:

FREDERICK R. ORR, E. EVERETT ELLIs.

